| Year | 1994 |
| Date | 06-May |
| Volume | 172 |
| Issue | 3,968 |
| Page | 544 |
| Category | Optical |
| Part | 9 |
| Title | Biological Microscope and Vertical Illuminator |
| Author | H.A.Holland |
| Notes | Describes the vertical illuminator. Vertical illuminator slide, vertical illuminator tube, tube slide top cover, reflector housing, reflector pivot bushes, reflector pivots, reflector knob and screw, reflector mounts, assembling the reflector |